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白塔堡河上覆水与沉积物间隙水N、P分布特征

杨 楠 于会彬 宋永会 郅二铨 袁林江 彭剑峰

杨 楠, 于会彬, 宋永会, 郅二铨, 袁林江, 彭剑峰. 白塔堡河上覆水与沉积物间隙水N、P分布特征[J]. 环境科学研究, 2013, 26(7): 728-735.
引用本文: 杨 楠, 于会彬, 宋永会, 郅二铨, 袁林江, 彭剑峰. 白塔堡河上覆水与沉积物间隙水N、P分布特征[J]. 环境科学研究, 2013, 26(7): 728-735.
YANG Nan, YU Hui-bin, SONG Yong-hui, ZHI Er-quan, YUAN Lin-jiang, PENG Jian-feng. Distribution of Nitrogen and Phosphorus in Overlying Water and Pore Water of Sediment in Baitabuhe River[J]. Research of Environmental Sciences, 2013, 26(7): 728-735.
Citation: YANG Nan, YU Hui-bin, SONG Yong-hui, ZHI Er-quan, YUAN Lin-jiang, PENG Jian-feng. Distribution of Nitrogen and Phosphorus in Overlying Water and Pore Water of Sediment in Baitabuhe River[J]. Research of Environmental Sciences, 2013, 26(7): 728-735.

白塔堡河上覆水与沉积物间隙水N、P分布特征

基金项目: 国家水体污染控制与治理科技重大专项(2012ZX07202-005);国家自然科学基金博士后基金项目(2012M510515)

Distribution of Nitrogen and Phosphorus in Overlying Water and Pore Water of Sediment in Baitabuhe River

  • 摘要: 为研究河流沉积物与间隙水间营养盐的迁移规律,采集白塔堡河干流平水期上覆水和沉积物间隙水样品,分析N、P分布特征,计算沉积物-水界面N、P扩散通量,并对上覆水与间隙水中营养盐含量进行回归分析. 结果表明:上覆水和间隙水中ρ(TN)、ρ(NH3-N)和ρ(TP)均为农村带河段最低,城镇带和城市带河段较高. N、P的主要来源,农村带河段为农村灰水和面源污染,城镇带河段为生活污水和工业园排水,城市带河段为城市生活污水和工业废水. 间隙水中各营养盐质量浓度基本上都高于上覆水,空间分布趋势相似. NH3-N、NO2--N、NO3--N和PO43--P在沉积物-水界面的平均扩散通量分别为0.429、0.134、0.080和0.143μmol/(m2·d),表明沉积物是上覆水重要的N、P源. 表层沉积物间隙水与上覆水中的ρ(NH3-N)(R2=0.874,P=0.0002)和ρ(PO43--P)(R2=0.704,P=0.0005)均呈极显著相关,ρ(NO2--N)呈显著相关(R2=0.501,P=0.0020),ρ(NO3--N)的相关性(R2=0.353,P=0.0150)不显著,说明白塔堡河沉积物间隙水中的N主要以NH3-N形态向上覆水中扩散;而间隙水中的P主要以PO43--P形态向上覆水中扩散.

     

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出版历程
  • 收稿日期:  2013-01-25
  • 修回日期:  2013-05-12
  • 刊出日期:  2013-07-25

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